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TJNiTED STATES PATENT Fries,

\VILLIAM T. BAUSMITH, OF LUDLOW, KENTUCKY, ASSIGNOR OF ONE-HALF TOMATTHEW H. BENTLEY, OF SAME PLACE.

CORE COMPOUND.

SPECIFICATION forming part of Letters Patent No. 270,625, dated January16, 1853.

Application filedNovember 27, 1882.

To all whom it may concern Be it known that I, WILLIAM T. BAUSMITH, acitizen of the United States, residing at Ludlow, in the county ofKenton and State of Kentucky, have invented certain new and usefulImprovements in Core Oompounds, of which the following is aspecification.

The object of my invention is to furnish a compound wherewith molderscan so strengthen core-sand as to enable castings to be freed therefromin the most perfect and expeditious manner, and without causingthe coreto blow or scab.

The preferred formula for preparing said compound is as follows: twohundred pounds ofpine-flour, one hundred pounds of kaolin, twenty poundsof resin, twenty pounds of coke, fifteen pounds of charcoal, and fifteenpounds of ashes. These ingredients are ground separately, being reducedto a fine powder capable of passing through a No. 20 sieve, saidingredients being then poured into any suitable agitator ormixing-machine, where they are thoroughly incorporated together. Thisthorough mixing of the ingredients compietes the" manufacture of thecompound, which is then used as follows: For brass castings about twopounds of the compound are mixed with one bushel of core-sand; but foriron castings about three pounds of the compound are mixed with onebushel of core-sand. These proportions, however, are not arbitrary, butmay be (No specimens.)

varied to suit the peculiar conditions of various sands or the views ofthe molders.

The pine-flour herein referred to is obtained 3 5 by grinding upspruce-pine; but where this ingredient cannot be procured ordinary flourmay be substituted therefor; but the former article is preferred onaccount of its containing so much pitch. Again, instead of kaolin 4oloam-sand maybe used, provided it contains considerable iron, thisingredient being known to molders as iron-loam sand. Goal-ashes aregenerally used; but where wood-ashes can be obtained at a reasonablerate the latter 5 should be employed.

It is evident the exact proportions of the several ingredients may beconsiderably varied without departing from the essential feature of myinvention, as the pine-flour and resin 50 are not always of the samestrength, and the nature of the kaolin is materially modified accordingto the situation where is is procured.

I claim as my invention- The hereindescribed core compound, con- 55sisting of pine-flour, kaolin, resin, coke, charcoal, and ashes,substantially in the proportions specified.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM T. BAUSMITH.

Witnesses:

JAMES H. LAYMAN, RANKIN D. J oNEs.

